Quasinormal modes of instein-Gauss-Bonnet-dilaton black holes

被引：106

作者：

Blazquez-Salcedo, Jose Luis ^{[1
]}

Khoo, Fech Scen ^{[1
,2
]}

Kunz, Jutta ^{[1
]}

机构：

[1] Carl von Ossietzky Univ Oldenburg, Inst Phys, Postfach 2503, D-26111 Oldenburg, Germany

[2] Univ Groningen, Van Swinderen Inst Particle Phys & Grav, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

来源：

PHYSICAL REVIEW D | 2017年 / 96卷 / 06期

关键词：

MASS;

D O I：

10.1103/PhysRevD.96.064008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study quasinormal modes of static Einstein-Gauss-Bonnet-dilaton black holes. Both axial and polar perturbations are considered and studied from l = 0 to l = 3. We emphasize the difference in the spectrum between the Schwarzschild solutions and dilatonic black holes. At large Gauss-Bonnet coupling constant, a small secondary branch of black holes is present, when the dilaton coupling is sufficiently strong. The modes of the primary branch can differ from the Schwarzschild modes up to 10%. The secondary branch is unstable and possesses long-lived modes. We address the possible effects of these modes on future observations of gravitational waves emitted during the ringdown phase of astrophysical black holes.

引用

页数：18

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